Voice communication method, apparatus, system thereof and data card, terminal

Abstract

The invention discloses a speech communication method, a device and the system, the data card and the terminal of the speech communication method. The speech communication method in the invention includes that the speech data is received and the quality of the speech data is detected; the size of the buffer is adjusted according to the quality detection result; the buffer with the adjusted size is adopted to buffer the received speech data; the buffered speech data is sent. Based on the speech communication method, the device and the system, the data card and the terminal of the speech communication method, the communication requirements in different situations are adapted; meanwhile, the dynamic balance is realized between the quality of the speech and the conversation delay.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a voice communication method, device and system thereof, a data card and a terminal. Background technique [0002] With the development of wireless networks, more and more applications are carried out on wireless links. Through wireless networks, data services and conventional voice services can also be performed. Devices dedicated to Internet access, such as data cards (wireless modem), when performing voice services, due to the limitations of network conditions, transmission limitations, and data sources themselves, the data sent and received will inevitably jitter , so it is necessary to buffer the sent and received data. [0003] In the existing technology, a buffer with a fixed size is used to prevent data jitter when transmitting voice data. Such as figure 1 As mentioned above, after the data card A receives the data sent by the terminal A, because the rate of the ...

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Problems solved by technology

[0005] During the research and practice of the prior art, the inventor found that at least the following problems exist in the prior art: (1) the buffer size is fixed, once set, it is difficult to adjust, and there is no way to achieve adaptive size

However, in different network environments, different data sources have different jitter amplitudes, and using a fixed-size buffer to balance data jitter, there may be no way to balance between call delay and call quality if it is too large or too small

(2) In order to increase the quality of the voice, it is necessary to ensure the continuity of the call, and it is necessary to increase the size of the buffer, which increases the delay. If the buffer size is fixed, when it is necessary to improve the quality or reduce the delay, it is necessary to Difficult to change, therefore, difficult to balance between call delay and call quality

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